Finding the Fourth Proportional to 909,660,670.25, 1,255,331,726.91 and 491,972,955.48
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Solution
The fourth proportional to 909,660,670.25, 1,255,331,726.91 and 491,972,955.48 is: 678,922,679.63
Step by Step Solution
- Step 1: Write the proportion equation
909,660,670.25 : 1,255,331,726.91 = 491,972,955.48 : x - Step 2: Convert to fraction form
909,660,670.25/1,255,331,726.91 = 491,972,955.48/x - Step 3: Cross multiply
909,660,670.25x = 1,255,331,726.91 × 491,972,955.48 - Step 4: Simplify right side
909,660,670.25x = 617,589,259,795,725,056 - Step 5: Solve for x
x = 617,589,259,795,725,056/909,660,670.25 - Step 6: Final answer
x = 678,922,679.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.